RE: Sat 04 May 202410 May 2024 14:14
Dearie me, Bothwell, you really don't get it...or has your friend been whispering?
Genetic was approved on the back of a Type II variation for Fortacin manufacture, with revised specs and accelerated stability data. The bioequivalence and Phase III studies used clinical trial supply from PSNW, different in several respects to the current commercially supplied version. Reference product is Senstend for which no CMC data exists (and for which MHRA authorisation may have expired). NMPA may not accept the Fortacin variation/dossier equivalence without supporting data and may require RT stability (zone 1-IVa inclusive).
On supply, Genetic operate two pMDI lines for three generic products. Fortacin requirement is so low that I believe it's being manufactured on a separate small volume line used for product work up and clinical trial supply, not the commercial lines. The HFA phasedown means that no contract pMDI manufacture in Europe will increase capacity until low-GWP propellants are approved and available (China also accepts the Kigali amendment, albeit with different timetabling).
As to claims around study data, the "strongly positive" Phase II failed to demonstrate any significant post-treatment difference between Fortacin and placebo (the latter giving a mean six-fold increase in IELT over baseline, p=0005, versus an eight-fold increase for Fortacin). No difference in perception of post-treatment benefit between drug and placebo (p=0.3585!). Study data is in the public domain, and explains why no progress has been made in the nearly 30 months since first FDA review. Now, China Phase III did involve a longer treatment period, so perhaps less chance of drug/placebo overlap, although a year on, only RPG have referenced the study, whereas Fosun was very quick to publish the bioequivalence data (publication of Phase III data would not impact on NMPA review). I wonder what Fosun makes of the US data?
Six years to make up the shortfall, Bothwell...tick....tock.